Metallic protector for pneumatic tires.



A. HU'LTEERG.

TOR FOR NEUMTIG T-R-ESi LIGATION METALLIC PROTEG APP FILED JULY 17, 190B.

Paem Bec. 7, i909.

' ENT nrien.-

ERIC H'l-.IIJ'IZBERG,` OF CHICAGO, ILLINOIS.

METALLIC PROTECTOR PNEUMATIC TIRES.

- Illinois, have invented certain new and useful Improvements in MetallicProtectors for Pneumatic Tires, of which the following'is a specification.

` The present invention is intended' to interpose a protector of` novel structure between the inner tube andthe casing or sheath of a pneumatic tire, said protector being formed of metal and comprising sections `which overlap at the joints and are connected by means of springs in such a manner as to allow the sections to move relatively as the tread 'of the tire is depressed by the weight of the load reposed thereon.-

For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for eti'ectin the result, reference is to be had to the ollowing description and accompanying drawings.

`Whilev the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or essential features thereof, still the preferred embodiment is shown in the accompanying dra-W- ings, in which:

Figure l is a side view of a pneumatic tire embodying the invention, parts being broken away to show more clearly the relation of the elements. Fig. 2 is a bottom plan view of the joint formed between the ends of adjacent sections of the protector. Fig. 3 is a longitudinal section, on the line 3 3 of Fig 2. Fig. 4 is a transverse sew tion on the line 4-4 of Fig. 2.

Corresponding and like parts are referred to in the following description and indicated in all the views of thc drawings by the same reference characters.

The protector is adapted to be interposed 'between the casing or sheath l and inner tube 2 of a pneumatic tire7 and comprises a series of sections A3 which are arranged with their ends overlapped at the joints. There may be any number of sections depending upon the diameter of the tire and the sections are formed of metal, such as' steel, aluminum, brass or the like, and the curvature of the sections in transverse section will depend upon the diameter of the tire and the Specification of Letters Patent. Application filed July 17, 1908. Serial No. 444,091`

Patented jDee. 7, 19019.

circumferentiall extent of each section may vary according to the amount or extent of the tire to be protected.

It is desirable that the protector cover the tread portion of the inner tube and extend along the sides thereof a suiiicient distance to prevent injury from the lateral thrust of an object penetrating the side of the sheath or casing so as to prevent puncture of the inner tube. The overlapped ends of the section 3 are reduced in thickness about onehalf so that a uniform thickness will exist at all points in the circumference of the protecton A Hat spring 4 is provided at each joint and extends beyond the overlapped end p0rtions of adjacent sections and its ends are connected to the end portions of the sections beyond the overlapped portions. In order to allow 'the 'sections to move at the joints which is essential in order to allow the tread portion of the tire to yield, the end portions of the springs 4 are connected to the sections 3 in a manner to allow a limited play. This is effected by a slot 5 in each end portion of the several'springs 4 and alheaded' stud G secured to the section 3 and operating in the slot 5, the head of the stud overlapping the portions of the spring bordering upon the slot It will thus be understood that while the springs 4 preserve the joints and hold `the sections in alinement, they, nevertheless, allow the sections to have a limited play so as not to detract from the yieldingqualities 'of the tire which are essential to absorb shock and vibration.

Having thus described the invention, what f is claimed as new is:

In a tire protector the combination with a tire of a plurality of metallic plates curved between their longitudinal edges to conform to the curvature of said tire, the extremities of said plates being oppositely reduced to allow the overlapping of the same and flat springs having longitudinal slots formed at the opposite ends thereof positioned against the inner faces-of said lates, said flat springs being extended beneat the overlapped eud or' said plates and riveted loosely thereto.

In testimony whereof I aflixmy signature in presence of two witnesses.

i ERIC A. l-IULTBERG. I L. a]

Witnesses: i

D. O. KLUnsseNDonr, R. H. `IQELsoN. 

